Improvement in plows



A. 8v 1:". M. FRANKLIN.

Plow.

No.108,24'7. Patented Oct. 11,1870.

ASAHEL F ANlLlN AND F {ANC/IS M FATnNT Trice.

. FRAXKLIX, )F SPRIGFIELD, OHIO.

IMPROVEMENT IN FLOWS.

Specification forming part of Leiters Patent N October "T0 LLZZ'wv/om it may concern:

Beit known that we, ASAHEL FRANKLIN and FRANoIs M. FRANKLIN, of Springfield, in the county of Clarke, and in the State of Ohio,vhave invented certain new and useful Improvements 'in Plows; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

The nature of our invention consists in certain improvements upon the plow of Francis M. Franklin, patented June S, 1869, antedated May 24, 1869, No. 91,109, and also in a new method for laying off the mold-board.

In order to enable others skilled in the art to which our invention appertains to make and use the same, we will now proceed to describe its construction and operation, referring to the annexed drawings, in which- Figure 1 is a perspective ofthe entire plow. Fig. 2 is a side View of the front end of the plowbearn, with draft-rod. Fig. 3 is a transverse vertical section, showing the construction and mode of attaching the ploW-sheth. Fig. 4c is a perspective of the mold-board as laid off. Figs. 5 and 6 are diagrams, showing the manner of laying oft' the mold-board; and Fig. 7 is a side elevation of the landside and cutter-bar.

The pattern for constructing our mold-board is made of a rectangular piece of wood of about the following dimensions, viz: three feet eight inches long, one foot wide, and fourteen inches high. rihc base of said block or pattern is represented in Fig. 6, line 1 being the right-hand base-line, 2 the left-hand baseline, 3 the front end line, and 4: the rear end line. The front and rear end lines are protracted on opposite sides, about five inches from the side lines, to A and B, and a regulating-line, H, drawn diagonally from Ato B, cutting the lines 1 and 2 at (l and D. rlhe line H passes from the rear and upper corner of the mold-board directly over the point B, diagonally across the block, about the center of the face of the mold-board, to a point i1n mediately over Ythe point C on the line 1, the height ot' about two inches and a half perpendicularly above the point C on the land- Y H crosses the landline. This is near thcjunc# tion of the share and 1nold-board, as is more clearly shown in Fig. 4. Additional pieces are put on the block or pattern to forni-the extension at the rear end. rihe surface ofthe mold-board will be finished in such a manner thata straight-edge laid on the line H will touch it its entire length.

In shaping the mold-board the block is scored roughlyto near the bottoni, and an incurvated line, E, is cnt from the point D (see Fig. 4) perpendicularly about two and half inches above the base-line, and extending to line 1, where the regulating-line H intersects it. The incurvated line E is drawn in the following` manner: From a point equidistant from D and C on the line H draw a horizontal line, F, at right angles with the line H. Atraln having a narrow chisel-pointed tooth at one end and ordinary pivot at the other is used, the pivot being placed on the line F three feet from the line H, and with the chisel-point cut the line E, as above. A line, G, is then dra-wn on what is to be iinishcd as the upper working-surface, starting at the point of the plow at or near the intersection of lines l, and 3, to the rear of the mold-board, everywhere twelve inches from the line 2. This line G corresponds with the upper contour ot' the 1noldboard, and is divided into sixteen spaces, about three and a quarter inches each. The line 2 is divided into eighteen spaces, about two and a half inches apart, and transverse lines drawn across the face of the mold-board, the first or front line, a, being dra-wn from a point two and a half inches from the front end of line 2 (or the width of one space on said line) to the point of the plow, as shown in Fig. 6. All these cross-lines are cut in to `tit a straight edge from the incurvated line E, across the regulating-line H, to line G.

A rule is thus furnished tol iinish back the upper portion of the mold-board. A moldboard finished by this rule will be concave in front and convex toward the rear, forming, as we term it, a combined concave and convex plow.

rlhe upper surface of the share; and those parts ofthe mold-board above line G and below line E, may be finished at will. The face of the mold-board at t-he rear end of line E is perpenline being the point where the regulating-line dicular between the point D on line Zandline II above it, the line E being at every point about two and a half inches from the plane of the ground-lines l and 2.

A mold-board constructed according to these rules will have its wcrkingsurface offering yery little resista-nce to the earth through which it 1s ruiming, either friotional or otherwise, and at the same time securing an even and regular turning of the earth from the furrow, and-also effecting a perfect scouring of the mold-board throughout its entire surface.

The sheth or standard I is made of wroughtiron of suitable thickness. Just below its attach.- ment to the mold-board'it forks, one'branch extending forward about eight inches and the other backward about two inches. these branches the landside M is attached by bolts. The sheth is bolted also near its bifurcation to the inside part of the mold-board L, its shape and attachment giving it Very great strength. From its point of attachment to the mold-board the sheth is rounded and rises about five inches, bending from the line of the beam J outwardly, and rising to about seventeen inches from the ground,whenit is bent in a right angle in theoppositc direction. This horizontal part, which we term a knee,?7 is provided with a small nietal bar, I), having ratchet-notches on its upper side,which baris litted in a-groove on top of the knee. It is keptin place by pins or raised points falling into indentations or holes in the bottom of said groove.

On the under side of the beam .I is placed a metal plate or bar, d, held in place by ilanges fi t', and provided on its underside with ratchet-notches to t in thcratchet-bar b. The upper side oftheknee,with the bar b, being roundp ed, the plate d is made concave to fitthe same.

By the use of the ratchet-plates b d the position of the beam is adjusted so asto take more or less land, while the dept-h is regulated by the upright K at its rear end.

An angular brace, N, having its angle pierced by a hole for the upright K, is attached to both the handles U O. The short arm of the brace N is dat, and its cnd bent so as to lie on the sur- 'Io both of face of the landside-handle and be secured to the same by one or more bolts,while the longer arm of said brace is round, provided with vscrew-threads, and passes through the moldboard handle, where it is fastened by a nut. By this means are not onlythe handles strengthened and supported, but the distance betweenl The cutter-bar R and landside M of the plow Y (from the share backl to the rear) is constructed of one piece, the bolts passing through the forked ends of the sheth I, securing it in place.

Ve do not claim underthis patent the rule for laying oft the mold-board; nor do weclaini the ratchet-connection of the standard and draft-rod and plow-beam, as these are setforth and claimed in the patent of F. M. Franklin for a plow, which bears an even .date with this.

Having thus fully described our invention, what weclaiin as new, and .desire to secure by Letters Patent, is-

The combination of the beam J, .draft-rod I with shoulder f, upright K, brace e, angular brace N, handles O O, forked sheth I, and ratchet-plates b d, all constructed and arranged substantially as and for the purposes herein set forth.

In testimony that we claim the foregoing we have hereunto set our hands this 16th day Aof October, 1869. Y

ASAHEL FRANKLIN. .V FRANCIS M. FRANKLIN.

XVitn esses:

JOHN F. OGLEVIE, B. C. CoNvERsn. 

